The flushinp routine is used to discard type-ahead characters.
Syntax | 
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   #include <curses.h>
   int flushinp();
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Return Values | 
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- OK
    Successful completion.
- ERR
   An error occurred.
Description | 
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The flushinp() routine discards all type-ahead characters (characters typed by the user, but not yet processed by CURSES).
Implementation Considerations | 
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Identical to XPG/3
Portability | 
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HP-UX, UNIX System V, XPG/3